This is for those of you looking to activate your Sirius/XM subscription after the free trial ends. I had some UI related difficulty activating my XM subscription for my MS. Perhaps it was operator error, but I doubt I will be the only one experiencing this issue.
Once the free trial is over, only channel 0 and channel 1 are presented on the UI. The toll-free number shows on Channel 1 and the Radio ID (specific to your car and needed for activation) is displayed only Channel 0. They should rethink grouping the two together, and Tesla should provide some documentation with the Sirius/XM radio ID for each car. My problem was with the app UI because it would not let me go to Channel 0 (grayed out), so I could not tell Sirius/XM my radio ID. Additionally, they had no record of my VIN from Tesla so could not find it for me. I was at a loss. Later I figured out I could navigate to Channel 0 through the steering wheel controls. That way I got the ID and was able to activate. The quality seems fine, although I encounter a lot of dead spots, and like mentioned above, there is no cover art.